It’s the queuing principle. Every day I watch people queue up to go through the Moscow Metro turnstiles. There are 5 to 10 gates but they all follow like sheep behind the person in front, through the same three turnstiles. So, one day, I decided to look into this. I deliberately chose a turnstile nobody was using, and guess what…they all followed me. So, perhaps the brief wasn’t off brief. It’s just that nobody wants to be the first one to move. Watch a bunch of nervous sheep being penned-in by a sheepdog. It is only the brave sheep that makes a break, and all the brave sheep have either been sold or killed, so what is left?.